Experimental demonstration of noise figure reduction caused by nonlinear photon statistics of saturated EDFA's
Abstract
For the first time, experimental evidence is presented for the prediction that the noise figure for an EDFA in the nonlinear or saturated regime, calculated by measuring the ASE power, can lead to an overestimation when compared to a direct measurement of the noise variance with an electrical spectrum analyzer. These results are in line with theories based on the quantum mechanical photon master equation describing an optical amplifier with saturated upper and lower ion inversion levels.
- Publication:
-
IEEE Photonics Technology Letters
- Pub Date:
- May 1995
- DOI:
- 10.1109/68.384519
- Bibcode:
- 1995IPTL....7..488W
- Keywords:
-
- Lasers;
- Light (Visible Radiation);
- Nonlinear Optics;
- Optical Fibers;
- Photons;
- Spontaneous Emission;
- Mathematical Models;
- Quantum Electronics;
- Signal To Noise Ratios;
- Spectrum Analysis;
- Lasers and Masers